Under-water ash-ejector.



J. F. METTEN.

UNDER WATER ASH EJEGTOR.

' APPLICATION FILED DEU.11, 1911.

Patented Sept. 29, 1914.

2 SHEETSSHEET 1.

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J. F. MBTTEN.

UNDER. WATER ASH EJEGTOR.

APPLICATION FILED DEC. 11, 1911.

1,1 12,151, Patented Sept. 29, 1914.

2 SHEETS-SHEET 2.

wi/fxmom gwvenboq M KW THE NORRIS PETERS CO4. FHOTO-LITHQ. WASHINGTON. D. c.

JOHN F. METTEN, OF PHILADELPHIA, PENNSYLVANIA.

UNDER-WATER ASH-EJECTOR.

Specification. of Letters Patent.

Application filed December 11, 1911. Serial No. 665,018.

To all whom it may concern:

Be it known that I, JOHN F. Mnrrrnn, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Under-Tater Ash-Ejectors, of which the following is a full, clear, and exact specification.

This invention relates to ash or refuse ejectors used on ships, and more especially refers to improvements in the type of ash ejector shown in my Patent, No. 990,369, dated April 25, 1911.

While retaining the general principle and mode of operation disclosed in said patent, this application is especially directed to improvements in the prior apparatus whereby the efficiency of the discharge-is increased; the seats of the gates kept clear of ashes or other objectionable material; and. an improved mounting of the gates whereby a limited adjustment thereof relatively to the seats is provided, for the purpose ofenabling the gates to operate in a more eflicient and satisfactory manner, and without becoming clogged or obstructed.

Further objects of the invention comprise improvements in the construction and assembling of parts of the nozzle, all of which will more fully appear in connection with the description of the accompanying drawings, whereinv 1 Figure 1 is a longitudinal section of an ash ejector embodying my improvements;

Fig. 2 is a plan view; Fig. 3 is a plan view showing my improved construction of nozzle, and Fig. 1 is a cross-section of a baffle and supporting plate for the ejector tube.

1 represents a hopper having a cover 2 hinged at 3, and having suitable fastenings 4, for holding the ejector closed water tight when desired. Connected with the lower end of the hopper is the ejector tube, composed of a flaring section 6 and a lower section 7, connected thereto, the section 7 being either flaring or straight, so as to permit the ashes to drop therethrough by gravity without any obstruction. Adjacent.

the upper end of the tube 6 is a disk gate 9, and at the lower end of the tube 6 is a similar gate 10, such as described in my previous patent. These gates are provided with displaced apertures, and are connected together so that only alternate portions of the tube can be opened at a time, thus'at all Patented Sept. 29, 19 14.

way from the sea into the ship. These gates are mounted on a vertical shaft 11, which 1s supported at the lower end ona conical bearing 12, the bearing being adjustable up and down by a screw 13, the upperend of the shaft 11 passing through a stuffing-box 14, and being provided with an operatinghandle 15.

16 are adjustable abutments to determine the throw of the handle 15, so that in one position ofthe handle, the aperture of one gate will be open, and at the other position, the aperture of the other gate will be open. As shown in the drawings, these gates are spaced slightly from the seats formed by the hopper l and the ends of the tubes 6 and 7 These spaces between the seats and .the upper and lower surfaces of the disks are in free communication with the water spaces 18 formed inside the casings 19, which inclose both gates. These water spaces are connected by a pipe 20 with the main pressure water supply pipe 21, so that whenever pressure water is supplied to the nozzle 22 formed at the lower end of I tube 7 duringthe operation of the ejector,

the pressure water will also be supplied to the casings 19, thence the water will flow over the seats of the disks into the ejector tube, when the disks are open, and thus clear 1 awayany lodged material. Thus the gates can be operated without being clogged by material. By the adjustment of the gates relatively to the seats, through the screw 13, the flow of water can be directed to have the best efl'ect in dislodging the material.

When the disks are under any unbalanced pressure from below, they are free to move vertically the amount of the clearance,

which permits them to seat tightly in case there should be any stoppage of the pump which supplies the water nozzle. adjustability of the disks up and downrelatively to the tube, they can be made to work By the with a minimum of effort, as the weight can ,be carried by the conical bearing 12,

which is out of contact with the seats, but still preventing leakage of water.

In order to dischargea special supply of water into the gate chamber, in order to blow out obstructions, such as bagging or waste that might be thrown in with the ashes, a branch pipe 23 of larger capacity is led from the pipe 20 into the gate chamber formed in; the tube 6, this pipe 23 beingcon i trolled by a cook 24, which under normal operation would remain closed.

is a lower disk gate, which ordinarily remains open, but which can be closed by the gear 26 and shafts 27-28 when it is desired to. inspect or take apart the apparatus.

29 isa universal joint which connects the shaft sections 2728, as the operating handlewheel 30 will be ordinarily disposed above the inner bottom 31 of the ship.

The water supply pipe 21 has its horizontal diameter preferably greater than its vertical diameter, in orderthat the force of the watermay not be dissipated by striking the lowerl tube section 7. To direct the water without shock within the water pipe casing 33, a rib or baffleplate 35 is centrally disposed therein, seen in Fig. 4, and which iscurved and thickened in order to divide the stream around the section 7 The lower end of the tube section 7 is provided with a nozzle portion 45, which is preferably composed of non-corrosive material, and which is tapered inwardly as shown in Fig. 1 so as to cooperatewitli the nozzle section 86, the inner surface of which nozzle section is tapered inwardly as at 37, for the purpose of insuring that the water discharge will be conical in form, without being broken up or dissipated, before it emerges through the outer skin 47 of the ship. It will be seen that a prolongation of the surface 37 will 'meet outside the ship, thus insuring that the conical discharge will not be broken up before it emerges. By reason of providing the lower gate 25 inthe form of a disk, the lower tube section 88 can be made relatively short, and is of cylindrical form, so as not to reduce the. velocity of flow. In order to direct the flow of water axially of the tube, and thereby increase its efficiency, the nozzle section 36, is provided with slots, in

which are set baflie plates 39, these being tapering in cross section toward each end so as to interpose no obstruction to the water, while insuring that the water at the I moment of passing through the restricted aperture will have a rectilinear direction without any whirling tendency. By this means, the efficiency of the stream is largely increased. The baffles 39 also serve to center the lower end of the tube section'7, being engagedtherewith' at the lower portions, as shown in Fig. 1'. Where the water pipe casingv33 passes through the inner bottom 31 0f the ship, it is centeredand supported a casting 40, which carries a gland 41 provided with suitable packing for insuring a ri gid and water-tight joint.

Itw ill be seen that the apparatus can be manipulated from above the inner bottom oftheship, and the parts which are most subject to wear and deterioration are readily accessiblefrom above the inner bottom. By

thega'te' 25flat, inaddition to requiring less space between the nozzle and the outer skin of the ship, the seat does not interfere with or break up the conical stream, which is at all times compelled, by reason of the bafiie plates, to flow in a longitudinal direction without eddying or whirling. Moreover, by reason of the auxiliary pressure water supply to the gate chambers and seats, and to the space between the gates, clogging or interference with free action is prevented.

Various modifications and changes in the specific details of construction may be made without departing from the scope of the invention.

Having thus described my invention, I declare that what I claim as new and desire to secure by Letters Patent is:

1. In an ash ejector adapted to discharge below water level, the combination of a tube opening through the ship below the water level, a casing connected with said tube and containing movable gates adapted to open and close said tube, seats for said gates comprised-between sections of said tube, said gates being spaced from said seats, and means for discharging water over said seats into said tube.

2; In an ashejector adapted to discharge a hopper, a closure therefor, a flaring cjector tube having its smallest diameter at the bottom of the hopper, a plurality of inclosed disk gates operable simultaneously to open and close alternate portions of said tube, means for adjusting said gates longitudinally of said tube, an annular converging water nozzle adjacent the lower end of said tube, and a disk gate below said tube and nozzle for fully opening said tube.

4-. An under water ash ejector comprising a hopper, an ejector tube having its smallest diameter at the bottom of the hopper, gates operable simultaneously to open and close alternate portions of said tube, an annular nozzle at the end of said tube, an outer tube beyond said nozzle having an unobstructed discharge for the stream from said nozzle, and a horizontally rotatable inclosed gate below said nozzle journaled ex- 6. In an under water ash ejector, the combination with an ejector tube, of a nozzle tube surrounding the end of said tube and spaced therefrom to form an annular nozzle, and radially disposed plates between said tubes for centering and supporting the ejector tube.

7 In an under water ash ejector, the combination with an ejector tube, of a nozzle tube surrounding said ejector tube to form an annular nozzle and having a fluid pressure connection, and means between said tubes for directing the flow in a longitudinal direction as it issues through said nozzle.

8. In an under water ash ejector, the combination with an ejector tube, of an annular nozzle surrounding the end of said tube, means for supplying water to said nozzle, and means within said nozzle for directing the flow longitudinally of said tube.

9. In an under water ash ejector, the combination with an ejector tube, of an annular nozzle surrounding the end of said tube, means for supplying water to said nozzle, and means comprising radially disposed plates, within said nozzle for directing the flow longitudinally of said tube.

10. In an ash ejector, the combination with an ejector tube, of a water supply pipe surrounding the end thereof and spaced therefrom to form a nozzle, a baflie plate at the entering end of said water pipe to direct the flow of water, and guide plates adjacent said nozzle.

11. In an ash ejector, the combination with an ejector tube, of a water supply pipe connected to and surrounding the lower end of said tube, means for directing the flow of water longitudinally of said tube, a nozzle formed between said tube and said pipe, and means constituting water guides supporting said tube relatively to said pipe.

12. In an ash ejector, the combination with an ejector tube, of a water supply pipe connected to and surrounding the lower end of said tube, a conical nozzle section secured to said pipe and extending beyond said tube to maintain a converging conical discharge and a relatively short straight tube section beyond said nozzle section opening through the outer skin of the ship for maintaining the stream conical as it emerges.

13. In an ash ejector, the combination with a vertically disposed downwardly flaring tube, of alternately operating transversely movable gates at the respective ends of said tube, a cylindrical tube constituting a continuation of said flaring tube, a conical nozzle at the lower end of said cylindrical tube, a conical nozzle tube surrounding and extending below said nozzle, and a cylindrical outer tube section connected to thelower end of said conical nozzle section and opening through the skin of the ship.

14. In an ash ejector, the combination with a vertically disposed downwardly flaring tube, of alternately operating transversely movable gates at the respectlve ends of said tube, a cylindrical tube constituting a continuation of said flaring tube, a conical nozzle at the lower end of said cylindrical tube, a conical nozzle'tube surrounding and extending below said nozzle, a cylindrical outer tube section connected to the lower end of said conical nozzle section and opening through the skin of the ship and a horizontally rotatable disk gate for opening and closing the passage below said nozzle, said gate when open not obstructing the conical discharge from said nozzle through said outer tube section.

In testimony whereof I afiix my signature, in presence of two witnesses.

JOHN F. METTEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

